20813760

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1$

素因数の和:113

約数の個数: 280

約数和(自身を含む): 81875376

約数和(自身を除く): 61061616

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 64, 66, 72, 73, 80, 81, 88, 90, 96, 99, 108, 110, 120, 132, 135, 144, 146, 160, 162, 165, 176, 180, 192, 198, 216, 219, 220, 240, 264, 270, 288, 292, 297, 320, 324, 330, 352, 360, 365, 396, 405, 432, 438, 440, 480, 495, 528, 540, 576, 584, 594, 648, 657, 660, 704, 720, 730, 792, 803, 810, 864, 876, 880, 891, 960, 990, 1056, 1080, 1095, 1168, 1188, 1296, 1314, 1320, 1440, 1460, 1485, 1584, 1606, 1620, 1728, 1752, 1760, 1782, 1971, 1980, 2112, 2160, 2190, 2336, 2376, 2409, 2592, 2628, 2640, 2880, 2920, 2970, 3168, 3212, 3240, 3285, 3504, 3520, 3564, 3942, 3960, 4015, 4320, 4380, 4455, 4672, 4752, 4818, 5184, 5256, 5280, 5840, 5913, 5940, 6336, 6424, 6480, 6570, 7008, 7128, 7227, 7884, 7920, 8030, 8640, 8760, 8910, 9504, 9636, 9855, 10512, 10560, 11680, 11826, 11880, 12045, 12848, 12960, 13140, 14016, 14256, 14454, 15768, 15840, 16060, 17520, 17820, 19008, 19272, 19710, 21024, 21681, 23360, 23652, 23760, 24090, 25696, 25920, 26280, 28512, 28908, 29565, 31536, 31680, 32120, 35040, 35640, 36135, 38544, 39420, 42048, 43362, 47304, 47520, 48180, 51392, 52560, 57024, 57816, 59130, 63072, 64240, 65043, 70080, 71280, 72270, 77088, 78840, 86724, 94608, 95040, 96360, 105120, 108405, 115632, 118260, 126144, 128480, 130086, 142560, 144540, 154176, 157680, 173448, 189216, 192720, 210240, 216810, 231264, 236520, 256960, 260172, 285120, 289080, 315360, 325215, 346896, 378432, 385440, 433620, 462528, 473040, 520344, 578160, 630720, 650430, 693792, 770880, 867240, 946080, 1040688, 1156320, 1300860, 1387584, 1734480, 1892160, 2081376, 2312640, 2601720, 3468960, 4162752, 5203440, 6937920, 10406880, 20813760]

約数ペア:

[(1, 20813760), (2, 10406880), (3, 6937920), (4, 5203440), (5, 4162752), (6, 3468960), (8, 2601720), (9, 2312640), (10, 2081376), (11, 1892160), (12, 1734480), (15, 1387584), (16, 1300860), (18, 1156320), (20, 1040688), (22, 946080), (24, 867240), (27, 770880), (30, 693792), (32, 650430), (33, 630720), (36, 578160), (40, 520344), (44, 473040), (45, 462528), (48, 433620), (54, 385440), (55, 378432), (60, 346896), (64, 325215), (66, 315360), (72, 289080), (73, 285120), (80, 260172), (81, 256960), (88, 236520), (90, 231264), (96, 216810), (99, 210240), (108, 192720), (110, 189216), (120, 173448), (132, 157680), (135, 154176), (144, 144540), (146, 142560), (160, 130086), (162, 128480), (165, 126144), (176, 118260), (180, 115632), (192, 108405), (198, 105120), (216, 96360), (219, 95040), (220, 94608), (240, 86724), (264, 78840), (270, 77088), (288, 72270), (292, 71280), (297, 70080), (320, 65043), (324, 64240), (330, 63072), (352, 59130), (360, 57816), (365, 57024), (396, 52560), (405, 51392), (432, 48180), (438, 47520), (440, 47304), (480, 43362), (495, 42048), (528, 39420), (540, 38544), (576, 36135), (584, 35640), (594, 35040), (648, 32120), (657, 31680), (660, 31536), (704, 29565), (720, 28908), (730, 28512), (792, 26280), (803, 25920), (810, 25696), (864, 24090), (876, 23760), (880, 23652), (891, 23360), (960, 21681), (990, 21024), (1056, 19710), (1080, 19272), (1095, 19008), (1168, 17820), (1188, 17520), (1296, 16060), (1314, 15840), (1320, 15768), (1440, 14454), (1460, 14256), (1485, 14016), (1584, 13140), (1606, 12960), (1620, 12848), (1728, 12045), (1752, 11880), (1760, 11826), (1782, 11680), (1971, 10560), (1980, 10512), (2112, 9855), (2160, 9636), (2190, 9504), (2336, 8910), (2376, 8760), (2409, 8640), (2592, 8030), (2628, 7920), (2640, 7884), (2880, 7227), (2920, 7128), (2970, 7008), (3168, 6570), (3212, 6480), (3240, 6424), (3285, 6336), (3504, 5940), (3520, 5913), (3564, 5840), (3942, 5280), (3960, 5256), (4015, 5184), (4320, 4818), (4380, 4752), (4455, 4672)]